Improvement in attaching thills to vehicles



N.H. SHAW. y TMll-Coupling.

No. 54.715; Patented .May 14., 1867.

taire i strat N. H. SHAW,'0F HOLDERNESS, NEW HAMPSHIRE.'v

Letters Patent No. 64,715,y dated M'ay 14, 1867.V

IMPROVEMENT IN ATTACHING THILLS T0 VEHICLES.

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'IO ALL WHOM II MAY CONCERN: A f

Be it known that I, SHAW, of I-Iolderness, Grafton county', New Hampshire, have invented new and useful Improvements in Shaft-Couplings; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the nrt to make and use the same, referencebeing had to the accompanying drawings, forming part of this specification.

The'shaftcoupliug embraced in the present invention, by that part of the same whichfis secured tothe axle, is made in two parts or sections, placed one upon the other, and both turning at one end upon one end of the bolt-stirrup or strap encircling the'shaft and fo'rming the means of fastening the couplingr thereto,iwhile at their other ends, betwcen the ear-pieces at suclrends, is hung, by its T-shap'ed end,` the strap or-bar secured to the carriage axle; this construction of the coupling enabling the wear of the shaft-strap to be compensated for or taken up, from time to time, as by 'such construction the ear-pieces between which the 'shaft-strap ishung can be drawn or brought closer together, as will bc obvious from the detail description thereof to be hereinafter given. In the accompanying plate of drawings my improvements in shaft-couplings are illustrated- Figure 1 being a transverse vertical vsection through the axle, and one coupling attached thereto.

Figure 2, a vertical section taken in the plane of the line 1H/,fig 1; and I i Figures 3 and 4 views-in detail of the twoparts to the coupling.

Similar letters of reference indicate corresponding parts.

A, in the drawings, represents that part of a shaft-coupling, for carriages and other vehicles, which is secured to theaxle'of the carriage, and B thc or strap which is fastened tothe shafts The part A of the coupling is made in two parts or pieces C., that are placed one upon another under the axle, and 'are there secured by a strap oryolie-bolt, D, encircling the axle; the two yparts 'C turning loosely on one end E of this bolt, while by`its other end it passes through an elongated opening, F, made in the two parts of the coupling, which allows the two pieces C to be swung or turned upon each other similar to ahinge-joint. Each part of the shaft portion of the coupling is provided with an ear-piece, G, between .the inside faces of which, across from onel to the other, the bar or strap B, secured to the shaft, is hung by its T-shaped end, and there secured bv a centre cross-pin or bolt II, on which it isto swing.

With a shaft-coupling constructed and applied to the axle in the manner above described, it is plain to be understood that the'distance between the two ear-pieces, whore the shaft is Ahung to the couplingycan he adjusted according as circumstances or the wear ofthe shaft-strap therein may require, by simply loosening or tightening the centre-bolt extending across from one to the other of the said ear-pieces, as is obvious Without any further explanation. i

The ear-pieces are countersunk at the proper point for bearings to the T or cross-head of the shaft-strap B of the coupling, and in suchcountersunk seats or bearings the ends of the said crossdiead turn. The end or cross;

head tothe shaft-strap I make of a conical shape at each of its tips L, with the seats or bearings in the `earpieces of a corresponding conical shape thereto,'whereby the coupling can be more perfectly adjusted as its bearing surface from time to time wears away. IrIli'eu of the'conical-s'haped tips tothe shaft-bar they may be provided with the conical-shaped bearings or seats, and the ear-pieces with correspondingshaped teats or prod jections to t in such bearings, the same result and eifect being produced as that described for the conical tips.

Having thus described my invention, what I claim as new, and desire to securebyiLetters Patent, is-s 1. Suspending the shaft to its coupling on carriage-axle, between two bearings or earpieees thereof, sus eeptible of adjustment, substantially as described. i

2. A shaftmoupling having that part of the same attached to the axle made in two parts or sections secured and hung together at one end, and one-upon the other, with the shaft-strap or bar suspended by a centre-bolt between ear-pieces at their other ends, substantially as and for the purpose described. i

3. The conical-shaped bearings between the shaft-strap or barand the part of the coupling secured to the axle, substantially as described, l

The above specification of my invention signed by me this '11th day of March, 1867.

N; H. sHAw.

Witnesses:

WM. I". McNAMAnA, ALBERT W. BROWN'. 

